CN213781801U - Special explosion-proof pressure relief device of transformer bushing lifting seat - Google Patents
Special explosion-proof pressure relief device of transformer bushing lifting seat Download PDFInfo
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- CN213781801U CN213781801U CN202022855397.6U CN202022855397U CN213781801U CN 213781801 U CN213781801 U CN 213781801U CN 202022855397 U CN202022855397 U CN 202022855397U CN 213781801 U CN213781801 U CN 213781801U
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Abstract
The utility model provides a special explosion-proof pressure relief device for a transformer bushing lifting seat, which comprises a transformer bushing lifting seat body, a control valve, a pressure relief device and a decompression chamber; the transformer bushing lifting seat is provided with a pressure relief opening, the front end of the control valve is fixedly connected with the pressure relief opening, the rear end of the control valve is fixedly connected with the front end of the pressure relief device, the rear end of the pressure relief device is fixedly connected with the front end of the decompression chamber, and the rear end of the decompression chamber is fixedly connected with an oil discharge pipe; the pressure relief device comprises a diaphragm clamp and an inverted arch diaphragm, the inverted arch diaphragm is a three-layer combined diaphragm, the inverted arch diaphragm sequentially comprises a metal diaphragm, a sealing diaphragm and a blasting diaphragm from the pressure side to the pressure relief side, and the inverted arch diaphragm is clamped and fixed by the diaphragm clamp. The device is internally provided with a pressure sensing and alarming device, when the inverted arch-shaped diaphragm is broken due to overlarge pressure, the series circuit and the connecting bridge are disconnected, and the external sensing device senses the state of the diaphragm and sends an alarming signal.
Description
Technical Field
The utility model belongs to the technical field of the explosion-proof safety protection technique of oil immersed transformer and specifically relates to a special explosion-proof pressure relief device of transformer bushing rising seat is related to.
Background
Oil-immersed transformer is because containing a large amount of transformer oil, when meetting high energy trouble, very easily explode and conflagration, people have proposed multiple blast proof measure for this reason, the new technology has been proposed to transformer body explosion-proof, but do not all carry out effectual protection to transformer bushing lifting seat, most adopt positive arch-shaped blasting diaphragm among the prior art, though can solve transformer explosion's problem to a certain extent, but because transformer operation operating mode is complicated, the steady operation requirement is very high, this kind of structural style's pressure release component is owing to having the crack, although covered the one deck seal membrane, often arouse sealed not tight, produce phenomenon such as oil leakage, this brings very big hidden danger for the long-term steady operation of transformer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a special explosion-proof pressure relief device of transformer bushing seat, be equipped with the valve of taking the on-off indicator lamp and the pressure release diaphragm that has pressure-sensing device among the device, can be for effectual solution oil-immersed transformer's explosion-proof problem.
The utility model provides a special explosion-proof pressure relief device for a transformer bushing lifting seat, which comprises a transformer bushing lifting seat body, a control valve, a pressure relief device and a decompression chamber; the transformer bushing lifting seat is provided with a pressure relief opening, the front end of the control valve is fixedly connected with the pressure relief opening, the rear end of the control valve is fixedly connected with the front end of the pressure relief device, the rear end of the pressure relief device is fixedly connected with the front end of the decompression chamber, and the rear end of the decompression chamber is fixedly connected with an oil discharge pipe;
pressure relief device includes diaphragm holder and anti-arch diaphragm, anti-arch diaphragm by the diaphragm holder presss from both sides the clamp to be fixed, anti-arch diaphragm includes metal diaphragm, seal membrane and blasting diaphragm by the pressure side in proper order towards pressure release side direction, anti-arch diaphragm by the diaphragm holder presss from both sides the clamp to be fixed.
Further, the diaphragm clamp holder comprises a front clamping part and a rear clamping part, the front clamping part is fixedly connected with the rear clamping part through a clamp connector, and a lead groove is formed between the front clamping part and the rear clamping part.
Furthermore, the blasting diaphragm comprises a convex surface and a ring plane, saw-tooth-shaped ring cutting sections are uniformly arranged on the periphery of the convex surface, a connecting bridge is arranged between every two adjacent saw-tooth-shaped ring cutting sections, a diaphragm state sensing circuit is bonded on the connecting bridge, the diaphragm state sensing circuits are sequentially connected in series to form a complete loop, and two ends of the diaphragm state sensing circuit which are connected in series are led out through lead grooves and are connected with an induction device except the diaphragm clamp holder.
Furthermore, the membrane state sensing circuit is tightly attached to the cut of the sawtooth-shaped ring cutting section, and a membrane state sensing circuit protective film covers the membrane state sensing circuit.
Furthermore, one side opposite to the lead groove on the convex surface is provided with a connecting part, the connecting part is connected with the convex surface and the ring plane, one side opposite to the connecting part on the convex surface is provided with an alarm line pull ring, an alarm line is fixed on the alarm line pull ring, and the alarm line penetrates through the lead groove and is connected with an induction device outside the diaphragm clamp holder.
Furthermore, the rear end of the oil discharge pipe is connected with an oil-gas separation device, the oil-gas separation device comprises an oil-gas separation tank and an exhaust pipe, the exhaust pipe is arranged at the top of the oil-gas separation tank, an air isolation valve is fixedly connected between the exhaust pipe and the oil-gas separation tank, the air isolation valve is a one-way valve, and an isolation net is arranged at the rear end of the exhaust pipe.
Furthermore, the pressure relief port is fixedly connected with the control valve through a flange plate.
Furthermore, sealing rubber rings are arranged between the front clamping part and the reverse arch-shaped membrane and between the rear clamping part and the reverse arch-shaped membrane.
Furthermore, a corrugated pipe is respectively arranged between the control valve and the pressure relief device or between the pressure relief cabin and the oil discharge pipe.
The technical proposal of the utility model is that a pressure relief device and an oil-gas separation device are arranged in the outlet direction of a transformer lifting seat, thereby effectively protecting the transformer lifting seat, a switch indicator lamp is arranged on a control valve, the switch indicator lamp can clearly see the switch state of the control valve, a diaphragm holder is connected at the back of the control valve, an inverted arch diaphragm is fixedly clamped in the diaphragm holder, the inverted arch diaphragm is a three-layer combined diaphragm and sequentially comprises a metal diaphragm, a sealing diaphragm and a blasting diaphragm, a diaphragm state sensing circuit is arranged on the blasting diaphragm, the working state of the blasting diaphragm can be more sensitively and more rapidly monitored by arranging the diaphragm state sensing circuit, the time required by signal transmission is shorter, and resistance can not be generated to fluid, compared with the traditional diaphragm alarm, the pressure relief device is more favorable for high-speed pressure relief, the metal diaphragm of the inverted arch diaphragm is more favorable for higher vacuum pressure bearing, the pressure relief device can bear absolute vacuum, the blasting diaphragm can be opened at 90 degrees with the pressure relief direction under the action of proper strong shock waves, a pressure relief channel is completely opened, and the inverted arch diaphragm has a larger pressure relief area and stronger pressure relief capacity under the same condition compared with the forward arch blasting diaphragm.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a solution of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the present invention;
FIG. 3 is a rear view of the diaphragm holder;
FIG. 4 is a cross-sectional view of the diaphragm holder taken along A-A;
FIG. 5 is a right side view of the diaphragm holder;
FIG. 6 is a rear view of an inverted arch diaphragm;
FIG. 7 is a sectional view and a partial enlarged view of the inverted arch diaphragm taken along line B-B;
description of reference numerals: 1-transformer bushing lifting seat, 2-flange plate, 3-control valve, 4-diaphragm holder, 401-rear holder, 402-front holder, 5-decompression chamber, 6-corrugated pipe, 7-oil drain pipe, 8-air isolating valve, 9-exhaust pipe, 10-oil-gas separation tank, 11-transformer bushing, 12-inverted arch diaphragm, 1201-metal diaphragm, 1202-sealing diaphragm, 1203-blasting diaphragm, 13-alarm line, 14-fastening nut, 15-holder connector, 16-nameplate, 17-sawtooth ring cutting section, 18-diaphragm state sensing circuit, 19-connecting part, 20-connecting bridge, 21-alarm line pull ring, 22-ring plane, 23-convexity;
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, 2, 3, 4, 5, 6 and 7;
an explosion-proof pressure relief device special for a transformer bushing lifting seat comprises a transformer bushing lifting seat 1 body, a control valve 3, a pressure relief device and a decompression chamber 5; be provided with the pressure release mouth on the transformer bushing seat of rising 1, the front end and the pressure release mouth fixed connection of control valve 3, the rear end and the front end fixed connection of pressure relief device of control valve 3, the rear end and the front end fixed connection of decompression chamber 5 of pressure relief device, the rear end fixed connection of decompression chamber 5 has oil drain pipe 7.
The pressure relief device comprises a membrane holder 4 and an inverted arch membrane 12, wherein the inverted arch membrane 12 is a three-layer combined membrane and sequentially comprises a metal membrane 1201, a sealing membrane 1202 and a blasting membrane 1203 from a pressure side to a pressure relief side, and the inverted arch membrane 12 is clamped and fixed by the membrane holder 4; the diaphragm clamp 4 comprises a front clamping part 402 and a rear clamping part 401, the front clamping part 402 and the rear clamping part 401 are fixedly connected through a clamp connecting piece 15, and a lead groove 14 is arranged between the front clamping part 402 and the rear clamping part 401; the blasting diaphragm 1203 comprises a convex surface 23 and a ring plane 22, sawtooth-shaped ring cutting sections 17 are uniformly arranged on the periphery of the convex surface 23, a connecting bridge 20 is arranged between every two adjacent sawtooth-shaped ring cutting sections 17, a diaphragm state sensing circuit 18 is bonded on the connecting bridge 20, the diaphragm state sensing circuits 18 are sequentially connected in series to form a complete loop, two ends of the diaphragm state sensing circuit 18 connected in series are led out of a diaphragm holder 4 through a lead slot 14 and are connected with an induction device, the loop outputs a normally closed contact signal, when any one supporting bridge is broken, the circuit loop is broken, and an open circuit signal of circuit loop breakage is sent.
The membrane state sensing circuit 18 is tightly attached to the notch of the sawtooth-shaped ring cutting section 17, so that the contact between air (oxygen) and the cutting surface can be effectively blocked, the electrochemical corrosion is prevented, and the membrane is protected. The diaphragm state sensing circuit 18 is covered with a protective film of the diaphragm state sensing circuit 18.
One side relative with lead wire groove 14 on convex surface 23 is equipped with connecting portion 19, and convex surface 23 and ring plane 22 are connected to connecting portion 19, and the top of connecting portion is equipped with data plate 16, makes things convenient for the carrying of anti-arch diaphragm to take, and one side relative with connecting portion 19 on the convex surface 23 is equipped with alarm line pull ring 13, is fixed with alarm line 13 on the alarm line pull ring 21, and alarm line 13 passes lead wire groove 14 and is connected with the outside induction system of diaphragm holder 4.
The rear end of oil drain pipe is connected with oil-gas separation device, and oil-gas separation device includes oil-gas separation jar 10 and blast pipe 9, and blast pipe 9 sets up at the top of oil-gas separation jar 10, fixedly connected with air isolation valve 8 between blast pipe 9 and the oil-gas separation jar 10, and air isolation valve 8 is the check valve, and the rear end of blast pipe 9 is provided with the separation net, prevents the foreign matter entering.
The pressure relief port is fixedly connected with the control valve 3 through a flange 2, and sealing rubber rings are arranged between a front clamping part 402 and a rear clamping part 401 of the diaphragm clamp 4 and the inverted arch diaphragm 12; bellows 6 are provided between the control valve 3 and the pressure relief device or between the pressure relief chamber and the oil discharge pipe, respectively, for buffering the impact at the time of high-speed pressure relief.
The utility model provides a pair of special explosion-proof pressure relief device of transformer rising seat, wherein be equipped with the pressure release mouth on the transformer bushing rising seat body, the quantity of pressure release mouth can be one or more, and the position of pressure release mouth can set up at top, middle part or the bottom of transformer bushing rising seat, and the bore of pressure release mouth should not be the undersize, and in principle the within range of allowwing is big more better. The pressure relief port is fixedly connected with the rear control valve through a flange plate, a switch signal indicator lamp is arranged on the control valve, and the switch signal indicator lamp can clearly see the switch state of the control valve; the back of the control valve is provided with an inverted arch diaphragm, the diaphragm has three layers, the innermost layer is a metal diaphragm which is contacted with a medium, the metal diaphragm is made of stainless steel and has no scratch or gap, the outermost layer is a blasting diaphragm, and the blasting pressure performance of the diaphragm is mainly determined by the layer structure and the strength of the layer structure; the rupture membrane is divided into a plane part and a convex part, about three quarters of the length of the circumference of the rupture membrane is cut in a saw-tooth shape between the two parts, meanwhile, connecting bridges are arranged between the cut saw-tooth-shaped ring sections and are connected with the two cut parts to play roles of connection and support, and the number, the width and the length of the connecting bridges directly influence the pressure-bearing capacity of the membrane; a connecting part is arranged between the starting position and the ending position of the cutting section of the sawtooth-shaped ring, and the connecting part is arranged to prevent the blasting diaphragm from being washed away when the connecting bridge on the blasting diaphragm is completely broken; and a layer of sealing film is added between the metal diaphragm and the blasting diaphragm, so that the sealing performance is further enhanced. Welding or bonding an alarm wire pull ring at the middle position of a cutting section on the rupture membrane, which is opposite to the uncut section, for fixing a membrane state sensing circuit, penetrating a thin wire with an insulating outer layer from a lead groove of a clamp holder, penetrating the thin wire through the fixed pull ring on the membrane rupture membrane, leading the wire out of the clamp holder and connecting the wire with a control cable for use as the membrane state sensing circuit; a decompression chamber with a larger diameter than that of the diaphragm is arranged behind the diaphragm and the clamp holder and used for carrying out emergency decompression on a medium decompressed at high speed, and the decompression chamber can be made of carbon steel, stainless steel, aluminum alloy and other materials with enough strength; pressure medium discharges to oil-gas separation jar or oil extraction pond through the oil extraction pipe at last, is equipped with key structure such as oil inlet, air inlet, gas vent on the oil-gas separation jar, sets up a check valve in the gas outlet of oil-gas separation jar to keep apart in air or moisture gets into the jar, set up a netted shelter from the thing at the blast pipe export, with the entering of tissue foreign matter. The corrugated pipes are respectively connected behind the control valve and the decompression chamber and can be used as buffers for buffering the impact during high-speed decompression; the sealing rubber ring can ensure that the sealing performance between the connecting pieces which are matched with each other is better, and the oil leakage phenomenon is prevented.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. An explosion-proof pressure relief device special for a transformer bushing lifting seat comprises a transformer bushing lifting seat body, and is characterized by further comprising a control valve, a pressure relief device and a decompression chamber;
the transformer bushing lifting seat is provided with a pressure relief opening, the front end of the control valve is fixedly connected with the pressure relief opening, the rear end of the control valve is fixedly connected with the front end of the pressure relief device, the rear end of the pressure relief device is fixedly connected with the front end of the decompression chamber, and the rear end of the decompression chamber is fixedly connected with an oil discharge pipe;
the pressure relief device comprises a diaphragm holder and an inverted arch diaphragm, the inverted arch diaphragm is clamped and fixed by the diaphragm holder, and the inverted arch diaphragm sequentially comprises a metal diaphragm, a sealing diaphragm and a blasting diaphragm from a pressure side to a pressure relief side.
2. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 1, wherein the diaphragm holder comprises a front holding portion and a rear holding portion, the front holding portion and the rear holding portion are fixedly connected through a holder connecting piece, and a lead groove is arranged between the front holding portion and the rear holding portion.
3. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 2, wherein the explosion diaphragm comprises a convex surface and a ring plane, saw-tooth-shaped ring cutting sections are uniformly arranged around the convex surface, a connecting bridge is arranged between every two adjacent saw-tooth-shaped ring cutting sections, a diaphragm state sensing circuit is bonded on the connecting bridge, the diaphragm state sensing circuits are sequentially connected in series to form a complete loop, and two ends of the diaphragm state sensing circuit connected in series are led out from the diaphragm holder through the lead slots to be connected with the sensing device.
4. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 3, wherein the diaphragm state sensing circuit is tightly attached to the cut of the sawtooth-shaped ring cutting section, and a diaphragm state sensing circuit protection film covers the diaphragm state sensing circuit.
5. The explosion-proof pressure relief device special for the transformer bushing elevating seat according to claim 3, wherein a connecting portion is arranged on one side of the convex surface opposite to the lead groove, the connecting portion connects the convex surface and the ring plane, an alarm wire pull ring is arranged on one side of the convex surface opposite to the connecting portion, an alarm wire is fixed on the alarm wire pull ring, and the alarm wire passes through the lead groove and is connected with an induction device outside the diaphragm holder.
6. The special explosion-proof pressure relief device for the transformer bushing lifting seat according to claim 1, wherein an oil-gas separation device is connected to the rear end of the oil discharge pipe, the oil-gas separation device comprises an oil-gas separation tank and an exhaust pipe, the exhaust pipe is arranged at the top of the oil-gas separation tank, an air isolation valve is fixedly connected between the exhaust pipe and the oil-gas separation tank, the air isolation valve is a one-way valve, and an isolation net is arranged at the rear end of the exhaust pipe.
7. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 1, wherein the pressure relief port is fixedly connected with the control valve through a flange plate.
8. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 2, wherein a sealing rubber ring is arranged between the front clamping portion and the inverted arch-shaped diaphragm, and between the rear clamping portion and the inverted arch-shaped diaphragm.
9. The explosion-proof pressure relief device special for the transformer bushing lifting seat according to claim 1, wherein a corrugated tube is respectively arranged between the control valve and the pressure relief device or between the pressure relief chamber and the oil drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022855397.6U CN213781801U (en) | 2020-12-02 | 2020-12-02 | Special explosion-proof pressure relief device of transformer bushing lifting seat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022855397.6U CN213781801U (en) | 2020-12-02 | 2020-12-02 | Special explosion-proof pressure relief device of transformer bushing lifting seat |
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| CN213781801U true CN213781801U (en) | 2021-07-23 |
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| CN202022855397.6U Active CN213781801U (en) | 2020-12-02 | 2020-12-02 | Special explosion-proof pressure relief device of transformer bushing lifting seat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764756A (en) * | 2021-09-07 | 2021-12-07 | 上海环能新科节能科技股份有限公司 | Energy storage power supply applied to extreme working condition environment |
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2020
- 2020-12-02 CN CN202022855397.6U patent/CN213781801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764756A (en) * | 2021-09-07 | 2021-12-07 | 上海环能新科节能科技股份有限公司 | Energy storage power supply applied to extreme working condition environment |
| CN113764756B (en) * | 2021-09-07 | 2023-04-07 | 上海环能新科节能科技股份有限公司 | Energy storage power supply applied to extreme working condition environment |
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